Monkey-wrench.



E. A. W. BEEMER. MONKEY WRENCHw APPLICATION FILED FEB, 12, 1913. RENEWED MAR. 16, m4.

1, 1 1 3,948. Patented Oct. 20. 1914.

, WITNESSES- f f INVENTOR.

BY d 7M %fl tdad j A TT ORNE Y.

NORRIS PETERS Ca, PHQTO-LITHQ. WASHANu/urv, u. u

of which is formed a fixed jaw 2.

UNITED sTAtrns AT T OFFICE. I

nLIAsA. w. BEEMER, or HAMILTON, onTAnI cAnAnA.

MonKnY-wnEncH.

Specification of Letters Patent.

Application filed February 12, 1913, Serial No. 7418,036- Renewed March 16, 1914. Serial No. 825,155.

To all whom it may concern i I Be it known that I, ELIAS A. W. BnnMnn, of the city of Hamilton, in the Province of Ontario, Canada, have invented certain new and useful Improvements in 1 Monkey Wrenches, of which the following is a specification, a

This invention relates to wrenches in which a fixed j is formed at one end of pivoted at one end in the movable jaw and at the other in the block, the whole being constructed in detail substantially as described and illustrated in the accompanying drawings in which Figure l is a side elevation,partly broken away, of a wrench constructed in accordelevation of part of the wrench looking at the other side. Fig. 3 is a cross-section through the movable jaw. Fig. 4 is a plan view, partly in section, of the toggle.

In the drawings like numerals of reference indicate corresponding parts in the different figures.

1 is the shank of the wrench at one g rllld e sliding jaw 3 is movable .on the shank in the usual manner. The sliding jaw is, however, recessed to receive the friction block 4. which has one edge shaped to engage the friction face 5 formed longitudinally of the shank. This friction face is preferably beveled outwardly, as indicated in Figs. 2 and 3, so that if the friction block be pressed toward it the friction block will also be pushed into firm contact with the outer wall 6 of the recess in the sliding jaw. The friction face is also inclined from the back toward the front of the wrench at the handle end of the shank, asshown in Fig. 1'. The purpose of this will hereinafter appear.

The block 4 has a pin 7 connected there with, which projects through the slot 8 formed in the wall 6 of the recess in the sliding jaw. The friction block 4 is pressed Patented Oct. 20, 1914.

toward the face 5 by means of a toggle 9.

This has a bearing at one end on a pin 10 passing throughthe sliding jaw. The other end has a bearmg in the block 4, this end being provided with the rounded portion 11.

fitting into block. i j i i A bent spring 12 is coiled around in the recess :13 formed in the toggle about the pin 10, one end engaging the toggle and the otherxthemovable jaw. This spring tends to move the toggle to cause the friction block 4: to engage the face 5. The operation of the wrenchiwill be obvious. By'pulling a suitably shaped recess the down on the pin 10 the block 4: is disengaged from the friction face:5. The movable aw may thus be freely slidup or down to the.

desired position. When the-pin is released the spring throws up the toggle and engages the friction block with the face ,5. The action of the spring may, of course, be aided by upward pressure on the pin.

The toggle lying very nearly in a perpen-' dicular to thelength of'the friction face 5 exerts. powerful pressure on the friction block so that the wrench will hold very firmly. ance with my inventlon. Flg. 2 1s a side The lengthwise inclination of the friction face 5. increases the security of the grip for a small opening of the jaws when any lost motlon 1s partlcularly prejudicial, as with small openlngs the wrench is usually being employed on nuts with comparatively small.

faces. i

i From the above description it will be seen that I have devised a wrench which will satisfactorily accomplish the objects of my invention as set out in the preamble to this specification.

What I claim as my invention is 2- 1. In a wrench the combination with the shank having a friction face formed longie tudinally on one side of the shank facing toward the other edge of the same, of a sliding jaw movable on the shank and having a recess therein; a friction block in said recess adapted to engage thefriction face; and a toggle pivoted at one end in the block and at the other end in the jaw. i

2. In a wrench the combination with the shank having a friction face formed longitudinally on one side of the shank facing toward the other edge of the same, of a slid ing jaw movable on the shank and having a recess therein; a friction block in said recess adapted to engage the friction face; a toggle gage the friction face; and a toggle pivoted at one end in the block and at the other end in the jaw.

4. In a wrench the combination with the shank having afriction face formed longitudinally on one side of the shankfacing toward the other edge of the same and inclined from'the back toward the front at the handle end of the shank, of a sliding jaw movable on the shank and having a recess'therein; a friction block in said recess adapted to engage the friction face; and a toggle pivoted at one end in the block and at the other end in the jaw.

5. In a wrench the combination with the i of a sliding shank having a friction face formed longitudinally on one side of the shank facing toward the other edge of the same outwardly beveled and inclined from the back toward the front at the handle end of the shank, jaw movable on the shank and having a recess therein; a friction block in said recess adapted to engage the friction face; and a toggle pivoted at one end in the block and at the other end in the jaw.

6. In a wrench the combination with the shank having a friction face formed longitudinally on one side of the shank facing toward the other edge of the same, of a sliding jaw movable on the shank and having a recess therein bounded by a slotted outer wall; a friction block in said recess adapted to engage the friction face and provided with a pin projected through said slot; and a toggle pivoted at one end in the block and at the other end in the aw.

Hamilton this 20th day of January, 1913.

ELIAS A. W. BEEMER.

Signed in the presence of- G120. ALLEN BEEMER, RICHARD BUTLER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

I Washington, D. G. 

